EMTP modeling of IGBT dynamic performance for power dissipation estimation

Wong, C.

doi:10.1109/28.567078

Cited by 37 publications

(12 citation statements)

References 3 publications

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“…The numerical evaluation of the converter losses for a wide range of operating points using a detailed switch model proved to be unfeasible due to the requirements of simulation steps in the order of nanoseconds. Therefore, alternative models were investigated [36,[41][42][43][44][45]. The evaluation of these losses was carried out using the look-up table approach proposed by [45] with the same approximation as [28][29][30]: the junction temperature was assumed constant at 125 • C, so that only manufacturer data are considered instead of experimental data.…”

Section: Pv System Lossesmentioning

confidence: 99%

Evaluation of the Reactive Power Support Capability and Associated Technical Costs of Photovoltaic Farms’ Operation

et al. 2018

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Abstract:The share of photovoltaic (PV) farms is increasing in the energy mix as power systems move away from conventional carbon-emitting sources. PV farms are equipped with an expensive power converter, which is, most of the time, used well bellow its rated capacity. This has led to proposals to use it to provide reactive power support to the grid. In this framework, this work presents a step-by-step methodology to obtain the reactive power support capability map and the associated technical costs of single-and two-stage PV farms during daytime operation. Results show that the use of two-stage PV farms can expand the reactive power support capability for low irradiance values in comparison to single-stage ones. Besides, despite losses being higher for two-stage PV farms, the technical cost in providing reactive power support is similar for both systems. Based on the obtained maps, it is demonstrated how the profits of a PV farm can be evaluated for the current ancillary services policy in Brazil. The proposed method is of interest to PV farm owners and grid operators to estimate the cost of providing reactive power support and to evaluate the economic feasibility in offering this ancillary service.

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Section: Pv System Lossesmentioning

confidence: 99%

Evaluation of the Reactive Power Support Capability and Associated Technical Costs of Photovoltaic Farms’ Operation

et al. 2018

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“…In [8], the average power dissipation of MMC topology was analytically calculated based on the assumption that the system operates in only steady-state condition, but not in transient condition. Also, the switching physics of device were applied to achieve the exact loss calculation in [9]. However, it requires a very small simulation time step, and therefore may not be applicable for the high-level MMC topology.…”

Section: Introductionmentioning

confidence: 99%

“…There are several studies [6][7][8][9][10] for the power loss modeling of MMC. The previous work in [7] estimated the power dissipation in MMC with the simple functions derived from losses based on a typical switching waveform.…”

Section: Introductionmentioning

confidence: 99%

Power Loss Modeling of Individual IGBT and Advanced Voltage Balancing Scheme for MMC in VSC-HVDC System

Son

Lee

Park³

2014

Journal of Electrical Engineering and Technology

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-This paper presents the new power dissipation model of individual switching device in a high-level modular multilevel converter (MMC), which can be mostly used in voltage sourced converter (VSC) based high-voltage direct current (HVDC) system and flexible AC transmission system (FACTS). Also, the voltage balancing method based on sorting algorithm is newly proposed to advance the MMC functionalities by effectively adjusting switching variations of the sub-module (SM). The proposed power dissipation model does not fully calculate the average power dissipation for numerous switching devices in an arm module. Instead, it estimates the power dissipation of every switching element based on the inherent operational principle of SM in MMC. In other words, the power dissipation is computed in every single switching event by using the polynomial curve fitting model with minimum computational efforts and high accuracy, which are required to manage the large number of SMs. After estimating the value of power dissipation, the thermal condition of every switching element is considered in the case of external disturbance. Then, the arm modeling for highlevel MMC and its control scheme is implemented with the electromagnetic transient simulation program. Finally, the case study for applying to the MMC based HVDC system is carried out to select the appropriate insulated-gate bipolar transistor (IGBT) module in a steady-state, as well as to estimate the proper thermal condition of every switching element in a transient state.

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“…Indeed, many works are dealing with the power losses of the switches of VSC [16,17,18,19,20,21], the power losses of the interface reactor, that is required for the good operation and control of the VSC, are either simply neglected [22,23], or roughly included using a percentage of the active power [24]. Similarly the losses of the transformer and filter are usually not included.…”

Section: Objectivementioning

confidence: 99%

“…So, alternative models have been proposed in the literature. Curve fitting models for calculating power losses were proposed by [16,17,18,19] with focus on VSCs. An electrothermal model has been proposed by [20] for evaluation of heat generation by VSC and performance evaluation of heat sinks.…”

Section: Converter Lossesmentioning

confidence: 99%

Technical cost of operating a PV installation as a STATCOM during nightime.

Lourenço¹

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EMTP modeling of IGBT dynamic performance for power dissipation estimation

Cited by 37 publications

References 3 publications

Evaluation of the Reactive Power Support Capability and Associated Technical Costs of Photovoltaic Farms’ Operation

Evaluation of the Reactive Power Support Capability and Associated Technical Costs of Photovoltaic Farms’ Operation

Power Loss Modeling of Individual IGBT and Advanced Voltage Balancing Scheme for MMC in VSC-HVDC System

Technical cost of operating a PV installation as a STATCOM during nightime.

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